Question

How many electrons have quantum number m=0 and s=1/2 in Cu atom

a)2
b)7
c)6
d)4

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Answer 1

Answer:

a.2

Explanation:

hence cu atom is 2

m = o s = 1/2 cu = 2

Answer 2

m = 0 and s=+½

Cu : 1s² 2s² 2p(6) 3s² 3p(6) 4s¹ 3d(10)

l = 0 0 1 0 1 0 2

m = 0 0 ±1,0 0 ±1,0 0 ±2,±1,0

So, there are (7) , 1 from each subshell